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  ǴԹ Meter Test

Portable Working Standard Meter MT 300

Functions

The working standard is providing the following functions:
Testing of electricity meter installations with 2-wire and 4
  wire circuits 
Testing of energy and power registers.
Power and energy measurement of active. reactive and apparent energy
 4 quadrant measurement.
Frequency-, phase angle-and power factor measurement.
Harmonic waveform analysis for voltage and current up to the
  40thTHD
Distortion factor measurement.
Vector diagram display.
Waveform sampling.
Rotary field display.
Deter mination of the operating burden on instrument tranformers
  for CT and PT.
*Ratio test by simultaneous measurement of both primary and secondary
  currents in CT connected metering systems.
* Selective power measurement.
* External thermal-printer for presentation of the measuring results

     customer site.
* Energy dosage

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Portable Working Standard Meter MT 320

Functions

The working standard is providing the following functions:
Testing of electricity meter installations with 2-wire and 4 wire circuits 
Testing of energy and power registers.
Power and energy measurement of active. reactive and apparent energy
 4 quadrant measurement.
Frequency-, phase angle-and power factor measurement.
Harmonic waveform analysis for voltage and current up to the 40thTHD
Distortion factor measurement.
Vector diagram display.

Waveform sampling.
Rotary field display.
Determination of the operating burden on instrument tranformers for
  CT and PT.

Operation without mains power supply possible
* Ratio test by simultaneous measurement of both primary and secondary
currents in CT connected metering systems.
* Selective power measurement.
* External thermal-printer for presentation of the measuring results

  customer site.
* Energy dosade
  * optional function, not serially
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Portable Moving Test MT 3000

The MT3000 is based on a real modular design concent
to provide the greatest possible flexibility for a
comprehensive testing of metering installations the field
The stable casing made of aluminium frames looks
appealing and does support the functionality of the
system. The 10,4 TFT display is visualizing the high
quality of the system.
The MT3000 system does distinguish oneself by its
excellent menu guided operation via the built in soft
keys and the coloured 10.4 TFT-display
Because of the real modular design concept the

MT3000 ystem comprises of various interchangeable
modules to configure the system individually according
to customer requirements. A system upgrade by

combining various modules with new functionality can
be easily done at any time without opening the
calibration seal.
The protection of designs has been registered under
approval No. 20111830.0

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 Threephase Comparator COM 3003

By continuation of previous developments the new COM 1003
Com 3003 comparator is the new member of the ZERA high precision measuring instrument series Accoring to the measuring requirement 2
versions are available: Single phase instrument COM 1003 or three phase
instrument COM 3003 These comparators are common used in
metrological institutes but also official test laboratories, power
utilities and meters manufacttures this kind of high accurate instruments
to perform their traceability to national or international standards.
High accuracy, independent of measuring mode,
Excellent long-tenrm stability
Use of DC-capable current transformers
Recalibration period by PTB ( German National Metrology Laboratory )
  set for 2 years
RS 232 and IEEE 488 interfaces
SCPI compatible IEEE 488 interface commands

Automatic measuring range selectionset for 2 years
Only one current input for the whole measuring range
Direct tranceability of measuring accuracy by connection of DC

  standard and frequency standard devices.

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             Reference-Multimeter RMM 3000

As a fallow-on to previous developments, the Reference Multimeter
RMM has been introduced as a new member of the ZERA precision
measuring equipment Depending on the requirements, there are
2 models availble:
RMM3000 up to 160 ampere
RMM3001 up to 160 ampere
The Reference Multimeter RMM can be used for for current, voltage
phase angle aud power measurement. Also energy comparison
measurements of electricity meters via pulse input is possible
The RMM can be usend for single and polyphase applications. The
functionality of RMM is sufficient for meterlogical institutes, test

laboratories of power utilities and electricity meter manufacturers.
ln combination with the robust transportation case electricity meter
manufacturers. In combination with the robust transportation case

( option ) the RMM is also suitable on site meter tests.

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 Portable Working Standard Meter TPZ308

Portable Source VCS 320

The VCS 320-1 and VCS 320- 2 are
portable 3 phase AC sources, producing
independent and controllable voltage and Current outputs.
Ther are suitable for
electicity meter testing in combination with the ZERA automatic
reference meters,
tedting transducer,
testing of power meters and similar measurement devices
subsrtandard meter testingn in combination with the ZERA current
booster CBS320 and the comparator COM3000

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Moving Test - MT30 Portable Working Standard ( NEW )

The System Concept

The MT 30 is a portable working standard based on state of the art
   technology in power and energy measurement. Various measuring
   features combined with a user friendly operation concept is providing
   the greatest possible exibility for a comprehensive testing of metering
   installations in the eld
  lts excellent measurement stability is re ecting the high quality of  
   the system.
The MT 30 working stsndard is distinguished by its exemplary
   combination of functionality and design lt is offering optimal via
   built-in soft-keys and a 6.4 LCD-display.
Features  

  Easy and user friendly operation
  Current measurement up to 120 A with error compensated Clip-on
   CTs

  Accuracy class 0.2
  NO additional error for reasurement  
  Unique long-term and temperature stability
  Driven by powerful rechargeabe battery-pack or grid potential
  Internal memory to store measurement results and customer data
  Windows based data management software MTV is for evaluation
    of the test results and test report generation
  A complete and light weight meter test set

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Single position meter testing system MTS 301

The design of the MTS 301 is based on modern state of art and
   wide experience of ZERA in Meter testing equipment manufacturing
   This is designed for flexible and efficient testing of energy meters
   simple as well complex, sophisticated & multifunctional in small
   quantities, for research & design, quality testing purposes.
  This provide great assistance in 
   meterological testing
   unusual, special testing
   type testing
  
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Stationary Meter Test Equipment

  MTS 301 MTS 320 MTS 340

By the use of most
modern power electronics
components the power
source system of ZERA is
characterized by an
extremely compact design. For
special applications like e.g. type
testing of electricity meters in
national metrology institutes or development lagoratories of
meter manufacturers ZERA can
also offer transformerless ana-
log amplifier source MTS610 for
for the generation of AC - and
DC-output settings over the
hole range.



 

U max (Pn): 3x40V ...320V 3x40V ...320V 3x40V ...320V
Power Voltage: 3x30VA 3x400VA 3x1000VA
l max: 1mA...120A 1mA...120A
opt. 320A
1mA...120A
opt. 320A
Power current: 3x200VA 3x1000VA 3x1500VA
Accuracy of the
test setting amplitude:
0,05% 0,05% 0,05%
Accuracy of the
test setting amplitude:
amplitude:
0,01° 0,05° 0,05°
Stability of the
test setting amplitude:
<50 ppm/h <50 ppm/h <50 ppm/h
 

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 Primary Standard PPCS

The new ZERA single phase precision power calibration system PPCS
   developed for the traceable caliration of measuring instrument for
   activereactive and apparent power and has a great importance
   national metrology institutes.
The new ZERA precision power calibration systion PPCS generates
   sinsoidal voltage and current with adiustable phase shifts of 0
° to
  
± 180° in the techequency range up to 60 Hz
The stable displaying and highly precise measurement of active-
   reactive and apparent power is possible for free selectable power
   factors with a standard measuring unecrtainty of < 10 x 10-6 by
   frequencies from 40 Hz to 60 Hz.

Capability characteristics
-  Highly precise current voltage and power calibration
-  Simple traceability to national standards

-  High measuring stability by using of many vears approved ZERA
   components
-  High repetittion accuracy of the measured values
-  Smallest measurement deviations of < 10 x 10 -6
   ( related to the nominal value of the apparent power )
Required calibration periods:
-  Transformers every 5 years
-  resistances every year
-  Multimeters every 90 days
  The inherent error of device - determined by a re-calibration - can be
   considered as error compensation by the application software.

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